Invited my brother and went with my old time friends from my former college, good, good times :D
I'll not the spoil the movie, but I will give you some thoughts about it. Firstly, we watched it in 3D and it doesn't add NOTHING (except for the thing that it almost triples the cost of your ticket). Okay, 4-5 scenes look more impressive but that's it. At some moments I forgot I was watching a 3D movie, but then I perceived the typical lowered frame rate and the bulk of those glasses against my own. While I appreciate that they didn't abused the 3D effect, I don't appreciate that they forced it on us making the premiere exclusively on 3D followed by the 2D release two weeks later. If you MUST watch it first and before than anybody, go ahead and blow the money. Otherwise, I'll tell you that you will not miss a thing if you watch it in 2D.
I can see that Daniel Radcliff has matured into a fine actor, because unlike child actors he has been in something that can only be described as a ten years acting school. The best of luck for all the three protagonists.
Now, onto the movie, it is the best one IMO. The adaptation suffers the same weakness from the first part at trying to put so much in so little, but it delivers. OH MAN, IT DOES. While it skips the half of the half of plot that it tackles, almost all of the Battle of Hogwarts and the key moments are displayed in all their epic glory: It takes almost all the movie and it is as awesome and as tragic as it is in the book! While there are changes, they work very well for the cinematographic adaptation, and the final battle is less sappy and more climatic. You can disagree, but it worked for me. The power of love and friendship is so overdone.
Speaking of things that makes me cringe... Albus Severus Potter... ugh, poor kid. Wizards sure suck at naming their kids.